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A vacuum-tube computer, now termed a first-generation computer, is a computer that uses vacuum tubes for logic circuitry. While the history of mechanical aids to computation goes back centuries , if not millennia , the history of vacuum tube computers is confined to the middle of the 20th century.
First stored-program computer to be sold, but did not work for customer. CSIRAC: 1949 1: Oldest surviving complete first-generation electronic computer — unrestored and non-functional. SEAC: 1950 1 First U.S. stored-program computer to become operational. Built by and for the U.S. National Bureau of Standards. Used solid-state diode circuits ...
An early portable computer with integrated monitor; the 5100 was possibly one of the first portable microcomputers using a CRT display. Sphere 1: 1975: A personal computer that was among the earliest complete all-in-one microcomputers that could be plugged in, turned on, and be fully functional. Processor Technology Sol-20: 1976
ENIAC (/ ˈ ɛ n i æ k /; Electronic Numerical Integrator and Computer) [1] [2] was the first programmable, electronic, general-purpose digital computer, completed in 1945. [ 3 ] [ 4 ] Other computers had some of these features, but ENIAC was the first to have them all.
Some notable examples of women in the history of computing are: Ada Lovelace: wrote the addendum to Babbage's Analytical Machine. Detailing, in poetic style, the first computer algorithm; a description of exactly how The Analytical Machine should have worked based on its design. Grace Murray Hopper: a pioneer of computing.
Apple iPod Classic 1st Generation eBay The OG iPod from 2001 rocked our worlds by introducing the ability to store thousands of songs (as opposed to the measly dozen or so tracks that fit on a CD).
The second-generation computer architectures initially varied; they included character-based decimal computers, sign-magnitude decimal computers with a 10-digit word, sign-magnitude binary computers, and ones' complement binary computers, although Philco, RCA, and Honeywell, for example, had some computers that were character-based binary ...
The machine was fairly representative of first-generation valve-driven computer designs.It used mercury acoustic delay lines as its primary data storage, with a typical capacity of 768 20-bit words, supplemented by a parallel disk-type device with a total 4096-word capacity and an access time of 10 milliseconds.